Solar activity increased rapidly in the past two days with three M-class and three major X-class solar events. The latest recorded is the strongest flare so far this year, recorded as X3.2 on May 14, 2013 at 01:17 UTC. This event was associated with Type II and Type IV Radio Emissions and 10cm radio Burst.
Type II Radio Emission occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event. Type IV Radio Emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms.
A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.
The source of all three X-class events is emerging active region designated as AR 1748. X1.7-class eruption was registered on May 13, 2013 at 02:17 UTC, followed by an X2.8-class flare at 16:09 UTC and an X3.2-class flare (0117 UT on May 14). This extraordinary active region is making its way fully onto the visible disk and we can expect more increased solar activity in the days ahead.
Solar rotation is bringing the active region 1748 into view, NOAA/SWPC forecasters estimate a 40% chance of more X-flares during the next 24 hours and high 80% chance of M-class events.
This extraordinary active region is making its way fully onto the visible disk and we can expect more strong solar activity in the days ahead.
Featured image: NASA - SDO